问题
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The device that most commonly utilizes the principle of electromagnetic induction is the__
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People often do not make decisions by using the basic economic principle of rationally wei
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Wordsworth is the chief representative of some of the most important principles in the Rom
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The United States is rich in natural resources in deposits, forestry, water power, etc. Th
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______is the representative of the aesthetic movement and advocates the principle of "art
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People often do not make decisions by using the basic economic principle of rationally wei